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e9e23e23 | 1 | /* "Face" primitives on the Microsoft W32 API. |
ee78dc32 GV |
2 | Copyright (C) 1993, 1994, 1995 Free Software Foundation. |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
ee78dc32 | 20 | |
fbd6baed | 21 | /* Ported xfaces.c for w32 - Kevin Gallo */ |
ee78dc32 GV |
22 | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | ||
26 | #include <config.h> | |
27 | #include "lisp.h" | |
28 | ||
29 | #include "w32term.h" | |
30 | #include "buffer.h" | |
31 | #include "dispextern.h" | |
32 | #include "frame.h" | |
33 | #include "blockinput.h" | |
34 | #include "window.h" | |
35 | #include "intervals.h" | |
30a231e6 GV |
36 | #include "charset.h" |
37 | #include "fontset.h" | |
ee78dc32 GV |
38 | |
39 | \f | |
40 | /* An explanation of the face data structures. */ | |
41 | ||
42 | /* ========================= Face Data Structures ========================= | |
43 | ||
44 | Let FACE-NAME be a symbol naming a face. | |
45 | ||
46 | Let FACE-VECTOR be (assq FACE-NAME (frame-face-alist FRAME)) | |
47 | FACE-VECTOR is either nil, or a vector of the form | |
48 | [face NAME ID FONT FOREGROUND BACKGROUND BACKGROUND-PIXMAP UNDERLINE-P] | |
49 | where | |
50 | face is the symbol `face', | |
51 | NAME is the symbol with which this vector is associated (a backpointer), | |
52 | ID is the face ID, an integer used internally by the C code to identify | |
53 | the face, | |
54 | FONT, FOREGROUND, and BACKGROUND are strings naming the fonts and colors | |
30a231e6 | 55 | to use with the face, FONT may name fontsets, |
ee78dc32 GV |
56 | BACKGROUND-PIXMAP is the name of an x bitmap filename, which we don't |
57 | use right now, and | |
58 | UNDERLINE-P is non-nil if the face should be underlined. | |
59 | If any of these elements are nil, that parameter is considered | |
60 | unspecified; parameters from faces specified by lower-priority | |
61 | overlays or text properties, or the parameters of the frame itself, | |
62 | can show through. (lisp/faces.el maintains these lists.) | |
63 | ||
64 | (assq FACE-NAME global-face-data) returns a vector describing the | |
65 | global parameters for that face. | |
66 | ||
30a231e6 | 67 | Let PARAM-FACE be FRAME->output_data.w32->param_faces[Faref(FACE-VECTOR,2)]. |
ee78dc32 GV |
68 | PARAM_FACE is a struct face whose members are the Xlib analogues of |
69 | the parameters in FACE-VECTOR. If an element of FACE-VECTOR is | |
70 | nil, then the corresponding member of PARAM_FACE is FACE_DEFAULT. | |
71 | These faces are called "parameter faces", because they're the ones | |
72 | lisp manipulates to control what gets displayed. Elements 0 and 1 | |
30a231e6 | 73 | of FRAME->output_data.w32->param_faces are special - they describe the |
ee78dc32 | 74 | default and mode line faces. None of the faces in param_faces have |
8e6208c5 | 75 | GC's. (See src/dispextern.h for the definition of struct face. |
ee78dc32 GV |
76 | lisp/faces.el maintains the isomorphism between face_alist and |
77 | param_faces.) | |
78 | ||
79 | The functions compute_char_face and compute_glyph_face find and | |
80 | combine the parameter faces associated with overlays and text | |
81 | properties. The resulting faces are called "computed faces"; none | |
82 | of their members are FACE_DEFAULT; they are completely specified. | |
83 | They then call intern_compute_face to search | |
30a231e6 | 84 | FRAME->output_data.x->computed_faces for a matching face, add one if |
ee78dc32 | 85 | none is found, and return the index into |
30a231e6 | 86 | FRAME->output_data.x->computed_faces. FRAME's glyph matrices use these |
ee78dc32 GV |
87 | indices to record the faces of the matrix characters, and the X |
88 | display hooks consult compute_faces to decide how to display these | |
89 | characters. Elements 0 and 1 of computed_faces always describe the | |
90 | default and mode-line faces. | |
91 | ||
92 | Each computed face belongs to a particular frame. | |
93 | ||
94 | Computed faces have graphics contexts some of the time. | |
95 | intern_face builds a GC for a specified computed face | |
96 | if it doesn't have one already. | |
97 | clear_face_cache clears out the GCs of all computed faces. | |
98 | This is done from time to time so that we don't hold on to | |
99 | lots of GCs that are no longer needed. | |
100 | ||
30a231e6 GV |
101 | If a computed face has 0 as its font, |
102 | it is unused, and can be reused by new_computed_face. | |
103 | ||
ee78dc32 GV |
104 | Constraints: |
105 | ||
106 | Symbols naming faces must have associations on all frames; for any | |
107 | FRAME, for all FACE-NAME, if (assq FACE-NAME (frame-face-alist | |
108 | FRAME)) is non-nil, it must be non-nil for all frames. | |
109 | ||
110 | Analogously, indices into param_faces must be valid on all frames; | |
111 | if param_faces[i] is a non-zero face pointer on one frame, then it | |
112 | must be filled in on all frames. Code assumes that face ID's can | |
113 | be used on any frame. | |
114 | ||
115 | Some subtleties: | |
116 | ||
117 | Why do we keep param_faces and computed_faces separate? | |
118 | computed_faces contains an element for every combination of facial | |
119 | parameters we have ever displayed. indices into param_faces have | |
120 | to be valid on all frames. If they were the same array, then that | |
121 | array would grow very large on all frames, because any facial | |
122 | combination displayed on any frame would need to be a valid entry | |
123 | on all frames. */ | |
124 | \f | |
125 | /* Definitions and declarations. */ | |
126 | ||
127 | /* The number of face-id's in use (same for all frames). */ | |
128 | static int next_face_id; | |
129 | ||
130 | /* The number of the face to use to indicate the region. */ | |
131 | static int region_face; | |
132 | ||
133 | /* This is what appears in a slot in a face to signify that the face | |
134 | does not specify that display aspect. */ | |
135 | #define FACE_DEFAULT (~0) | |
136 | ||
f2b56a5d | 137 | Lisp_Object Qface; |
ee78dc32 GV |
138 | Lisp_Object Qpixmap_spec_p; |
139 | ||
f2b56a5d GV |
140 | extern Lisp_Object Qmouse_face; /* In textprop.c. */ |
141 | ||
ee78dc32 GV |
142 | int face_name_id_number ( /* FRAME_PTR, Lisp_Object name */ ); |
143 | ||
144 | struct face *intern_face ( /* FRAME_PTR, struct face * */ ); | |
145 | static int new_computed_face ( /* FRAME_PTR, struct face * */ ); | |
146 | static int intern_computed_face ( /* FRAME_PTR, struct face * */ ); | |
147 | static void ensure_face_ready ( /* FRAME_PTR, int id */ ); | |
148 | void recompute_basic_faces ( /* FRAME_PTR f */ ); | |
8be05193 GV |
149 | static void merge_face_list ( /* FRAME_PTR, struct face *, Lisp_Object */ ); |
150 | ||
151 | extern Lisp_Object Qforeground_color, Qbackground_color; | |
ee78dc32 GV |
152 | \f |
153 | /* Allocating, copying, and comparing struct faces. */ | |
154 | ||
155 | /* Allocate a new face */ | |
156 | static struct face * | |
157 | allocate_face () | |
158 | { | |
159 | struct face *result = (struct face *) xmalloc (sizeof (struct face)); | |
160 | bzero (result, sizeof (struct face)); | |
161 | result->font = (XFontStruct *) FACE_DEFAULT; | |
30a231e6 | 162 | result->fontset = -1; |
ee78dc32 GV |
163 | result->foreground = FACE_DEFAULT; |
164 | result->background = FACE_DEFAULT; | |
165 | result->stipple = FACE_DEFAULT; | |
166 | return result; | |
167 | } | |
168 | ||
169 | /* Make a new face that's a copy of an existing one. */ | |
170 | static struct face * | |
171 | copy_face (face) | |
172 | struct face *face; | |
173 | { | |
174 | struct face *result = allocate_face (); | |
175 | ||
176 | result->font = face->font; | |
30a231e6 | 177 | result->fontset = face->fontset; |
ee78dc32 GV |
178 | result->foreground = face->foreground; |
179 | result->background = face->background; | |
180 | result->stipple = face->stipple; | |
181 | result->underline = face->underline; | |
182 | result->pixmap_h = face->pixmap_h; | |
183 | result->pixmap_w = face->pixmap_w; | |
184 | ||
185 | return result; | |
186 | } | |
187 | ||
188 | static int | |
189 | face_eql (face1, face2) | |
190 | struct face *face1, *face2; | |
191 | { | |
192 | return ( face1->font == face2->font | |
30a231e6 | 193 | && face1->fontset == face2->fontset |
ee78dc32 GV |
194 | && face1->foreground == face2->foreground |
195 | && face1->background == face2->background | |
196 | && face1->stipple == face2->stipple | |
197 | && face1->underline == face2->underline); | |
198 | } | |
199 | \f | |
200 | /* Managing graphics contexts of faces. */ | |
201 | ||
202 | /* Given a computed face, construct its graphics context if necessary. */ | |
203 | ||
204 | struct face * | |
205 | intern_face (f, face) | |
206 | struct frame *f; | |
207 | struct face *face; | |
208 | { | |
209 | face->gc = NULL; | |
210 | ||
211 | return face; | |
212 | } | |
213 | ||
214 | /* Clear out all graphics contexts for all computed faces | |
215 | except for the default and mode line faces. | |
216 | This should be done from time to time just to avoid | |
217 | keeping too many graphics contexts that are no longer needed. */ | |
218 | ||
219 | void | |
220 | clear_face_cache () | |
221 | { | |
222 | /* Nothing extra */ | |
223 | } | |
224 | \f | |
225 | /* Allocating, freeing, and duplicating fonts, colors, and pixmaps. | |
226 | ||
227 | These functions operate on param faces only. | |
228 | Computed faces get their fonts, colors and pixmaps | |
229 | by merging param faces. */ | |
230 | ||
231 | static XFontStruct * | |
232 | load_font (f, name) | |
233 | struct frame *f; | |
234 | Lisp_Object name; | |
235 | { | |
30a231e6 GV |
236 | struct font_info *fontinf; |
237 | XFontStruct *font = NULL; | |
ee78dc32 GV |
238 | |
239 | if (NILP (name)) | |
240 | return (XFontStruct *) FACE_DEFAULT; | |
241 | ||
242 | CHECK_STRING (name, 0); | |
243 | BLOCK_INPUT; | |
30a231e6 | 244 | fontinf = w32_load_font (f, (char *) XSTRING (name)->data, 0); |
ee78dc32 | 245 | UNBLOCK_INPUT; |
30a231e6 GV |
246 | if (fontinf) |
247 | font = (XFontStruct *)fontinf->font; | |
ee78dc32 GV |
248 | |
249 | if (! font) | |
250 | Fsignal (Qerror, Fcons (build_string ("undefined font"), | |
251 | Fcons (name, Qnil))); | |
252 | return font; | |
253 | } | |
254 | ||
255 | static void | |
256 | unload_font (f, font) | |
257 | struct frame *f; | |
258 | XFontStruct *font; | |
259 | { | |
260 | if (!font || font == ((XFontStruct *) FACE_DEFAULT)) | |
261 | return; | |
262 | ||
263 | BLOCK_INPUT; | |
fbd6baed | 264 | w32_unload_font (FRAME_W32_DISPLAY_INFO (f), font); |
ee78dc32 GV |
265 | UNBLOCK_INPUT; |
266 | } | |
267 | ||
268 | static unsigned long | |
269 | load_color (f, name) | |
270 | struct frame *f; | |
271 | Lisp_Object name; | |
272 | { | |
273 | COLORREF color; | |
274 | int result; | |
275 | ||
276 | if (NILP (name)) | |
277 | return FACE_DEFAULT; | |
278 | ||
279 | CHECK_STRING (name, 0); | |
280 | /* if the colormap is full, defined_color will return a best match | |
281 | to the values in an an existing cell. */ | |
282 | result = defined_color(f, (char *) XSTRING (name)->data, &color, 1); | |
283 | if (! result) | |
284 | Fsignal (Qerror, Fcons (build_string ("undefined color"), | |
285 | Fcons (name, Qnil))); | |
286 | return (unsigned long) color; | |
287 | } | |
288 | ||
289 | static void | |
290 | unload_color (f, pixel) | |
291 | struct frame *f; | |
292 | unsigned long pixel; | |
293 | { | |
294 | } | |
295 | ||
296 | DEFUN ("pixmap-spec-p", Fpixmap_spec_p, Spixmap_spec_p, 1, 1, 0, | |
30a231e6 GV |
297 | "Return t if OBJECT is a valid pixmap specification.") |
298 | (object) | |
299 | Lisp_Object object; | |
ee78dc32 GV |
300 | { |
301 | Lisp_Object height, width; | |
302 | ||
30a231e6 GV |
303 | return ((STRINGP (object) |
304 | || (CONSP (object) | |
305 | && CONSP (XCONS (object)->cdr) | |
306 | && CONSP (XCONS (XCONS (object)->cdr)->cdr) | |
307 | && NILP (XCONS (XCONS (XCONS (object)->cdr)->cdr)->cdr) | |
308 | && (width = XCONS (object)->car, INTEGERP (width)) | |
309 | && (height = XCONS (XCONS (object)->cdr)->car, INTEGERP (height)) | |
310 | && STRINGP (XCONS (XCONS (XCONS (object)->cdr)->cdr)->car) | |
ee78dc32 GV |
311 | && XINT (width) > 0 |
312 | && XINT (height) > 0 | |
313 | /* The string must have enough bits for width * height. */ | |
30a231e6 | 314 | && ((XSTRING (XCONS (XCONS (XCONS (object)->cdr)->cdr)->car)->size |
ee78dc32 GV |
315 | * (BITS_PER_INT / sizeof (int))) |
316 | >= XFASTINT (width) * XFASTINT (height)))) | |
317 | ? Qt : Qnil); | |
318 | } | |
319 | ||
320 | /* Load a bitmap according to NAME (which is either a file name | |
321 | or a pixmap spec). Return the bitmap_id (see xfns.c) | |
322 | or get an error if NAME is invalid. | |
323 | ||
324 | Store the bitmap width in *W_PTR and height in *H_PTR. */ | |
325 | ||
326 | static long | |
327 | load_pixmap (f, name, w_ptr, h_ptr) | |
328 | FRAME_PTR f; | |
329 | Lisp_Object name; | |
330 | unsigned int *w_ptr, *h_ptr; | |
331 | { | |
332 | int bitmap_id; | |
333 | Lisp_Object tem; | |
334 | ||
335 | if (NILP (name)) | |
336 | return FACE_DEFAULT; | |
337 | ||
338 | tem = Fpixmap_spec_p (name); | |
339 | if (NILP (tem)) | |
340 | wrong_type_argument (Qpixmap_spec_p, name); | |
341 | ||
342 | BLOCK_INPUT; | |
343 | ||
344 | if (CONSP (name)) | |
345 | { | |
346 | /* Decode a bitmap spec into a bitmap. */ | |
347 | ||
348 | int h, w; | |
349 | Lisp_Object bits; | |
350 | ||
351 | w = XINT (Fcar (name)); | |
352 | h = XINT (Fcar (Fcdr (name))); | |
353 | bits = Fcar (Fcdr (Fcdr (name))); | |
354 | ||
355 | bitmap_id = x_create_bitmap_from_data (f, XSTRING (bits)->data, | |
356 | w, h); | |
357 | } | |
358 | else | |
359 | { | |
360 | /* It must be a string -- a file name. */ | |
361 | bitmap_id = x_create_bitmap_from_file (f, name); | |
362 | } | |
363 | UNBLOCK_INPUT; | |
364 | ||
365 | if (bitmap_id < 0) | |
366 | Fsignal (Qerror, Fcons (build_string ("invalid or undefined bitmap"), | |
367 | Fcons (name, Qnil))); | |
368 | ||
369 | *w_ptr = x_bitmap_width (f, bitmap_id); | |
370 | *h_ptr = x_bitmap_height (f, bitmap_id); | |
371 | ||
372 | return bitmap_id; | |
373 | } | |
374 | ||
375 | \f | |
376 | /* Managing parameter face arrays for frames. */ | |
377 | ||
378 | void | |
379 | init_frame_faces (f) | |
380 | FRAME_PTR f; | |
381 | { | |
382 | ensure_face_ready (f, 0); | |
383 | ensure_face_ready (f, 1); | |
384 | ||
385 | FRAME_N_COMPUTED_FACES (f) = 0; | |
386 | FRAME_SIZE_COMPUTED_FACES (f) = 0; | |
387 | ||
388 | new_computed_face (f, FRAME_PARAM_FACES (f)[0]); | |
389 | new_computed_face (f, FRAME_PARAM_FACES (f)[1]); | |
390 | recompute_basic_faces (f); | |
391 | ||
ee78dc32 GV |
392 | /* Find another frame. */ |
393 | { | |
394 | Lisp_Object tail, frame, result; | |
395 | ||
396 | result = Qnil; | |
397 | FOR_EACH_FRAME (tail, frame) | |
fbd6baed | 398 | if (FRAME_W32_P (XFRAME (frame)) |
ee78dc32 GV |
399 | && XFRAME (frame) != f) |
400 | { | |
401 | result = frame; | |
402 | break; | |
403 | } | |
404 | ||
405 | /* If we didn't find any X frames other than f, then we don't need | |
406 | any faces other than 0 and 1, so we're okay. Otherwise, make | |
407 | sure that all faces valid on the selected frame are also valid | |
408 | on this new frame. */ | |
409 | if (FRAMEP (result)) | |
410 | { | |
411 | int i; | |
412 | int n_faces = FRAME_N_PARAM_FACES (XFRAME (result)); | |
413 | struct face **faces = FRAME_PARAM_FACES (XFRAME (result)); | |
414 | ||
415 | for (i = 2; i < n_faces; i++) | |
416 | if (faces[i]) | |
417 | ensure_face_ready (f, i); | |
418 | } | |
419 | } | |
ee78dc32 GV |
420 | } |
421 | ||
422 | ||
423 | /* Called from Fdelete_frame. */ | |
424 | ||
425 | void | |
426 | free_frame_faces (f) | |
427 | struct frame *f; | |
428 | { | |
429 | int i; | |
430 | ||
431 | BLOCK_INPUT; | |
432 | ||
433 | for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) | |
434 | { | |
435 | struct face *face = FRAME_PARAM_FACES (f) [i]; | |
436 | if (face) | |
437 | { | |
30a231e6 | 438 | if (face->fontset < 0) |
ee78dc32 GV |
439 | unload_font (f, face->font); |
440 | unload_color (f, face->foreground); | |
441 | unload_color (f, face->background); | |
442 | x_destroy_bitmap (f, face->stipple); | |
443 | xfree (face); | |
444 | } | |
445 | } | |
446 | xfree (FRAME_PARAM_FACES (f)); | |
447 | FRAME_PARAM_FACES (f) = 0; | |
448 | FRAME_N_PARAM_FACES (f) = 0; | |
449 | ||
450 | /* All faces in FRAME_COMPUTED_FACES use resources copied from | |
451 | FRAME_PARAM_FACES; we can free them without fuss. | |
452 | But we do free the GCs and the face objects themselves. */ | |
453 | for (i = 0; i < FRAME_N_COMPUTED_FACES (f); i++) | |
454 | { | |
455 | struct face *face = FRAME_COMPUTED_FACES (f) [i]; | |
456 | if (face) | |
457 | { | |
458 | xfree (face); | |
459 | } | |
460 | } | |
461 | xfree (FRAME_COMPUTED_FACES (f)); | |
462 | FRAME_COMPUTED_FACES (f) = 0; | |
463 | FRAME_N_COMPUTED_FACES (f) = 0; | |
464 | ||
465 | UNBLOCK_INPUT; | |
466 | } | |
467 | \f | |
468 | /* Interning faces in a frame's face array. */ | |
469 | ||
470 | static int | |
471 | new_computed_face (f, new_face) | |
472 | struct frame *f; | |
473 | struct face *new_face; | |
474 | { | |
30a231e6 GV |
475 | int len = FRAME_N_COMPUTED_FACES (f); |
476 | int i; | |
477 | ||
478 | /* Search for an unused computed face in the middle of the table. */ | |
479 | for (i = 0; i < len; i++) | |
480 | { | |
481 | struct face *face = FRAME_COMPUTED_FACES (f)[i]; | |
482 | if (face->font == 0) | |
483 | { | |
484 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
485 | return i; | |
486 | } | |
487 | } | |
ee78dc32 GV |
488 | |
489 | if (i >= FRAME_SIZE_COMPUTED_FACES (f)) | |
490 | { | |
491 | int new_size = i + 32; | |
492 | ||
493 | FRAME_COMPUTED_FACES (f) | |
494 | = (struct face **) (FRAME_SIZE_COMPUTED_FACES (f) == 0 | |
495 | ? xmalloc (new_size * sizeof (struct face *)) | |
496 | : xrealloc (FRAME_COMPUTED_FACES (f), | |
497 | new_size * sizeof (struct face *))); | |
498 | FRAME_SIZE_COMPUTED_FACES (f) = new_size; | |
499 | } | |
500 | ||
501 | i = FRAME_N_COMPUTED_FACES (f)++; | |
502 | FRAME_COMPUTED_FACES (f)[i] = copy_face (new_face); | |
503 | return i; | |
504 | } | |
505 | ||
506 | ||
507 | /* Find a match for NEW_FACE in a FRAME's computed face array, and add | |
508 | it if we don't find one. */ | |
509 | static int | |
510 | intern_computed_face (f, new_face) | |
511 | struct frame *f; | |
512 | struct face *new_face; | |
513 | { | |
514 | int len = FRAME_N_COMPUTED_FACES (f); | |
515 | int i; | |
516 | ||
517 | /* Search for a computed face already on F equivalent to FACE. */ | |
518 | for (i = 0; i < len; i++) | |
519 | { | |
520 | if (! FRAME_COMPUTED_FACES (f)[i]) | |
521 | abort (); | |
522 | if (face_eql (new_face, FRAME_COMPUTED_FACES (f)[i])) | |
523 | return i; | |
524 | } | |
525 | ||
526 | /* We didn't find one; add a new one. */ | |
527 | return new_computed_face (f, new_face); | |
528 | } | |
529 | ||
530 | /* Make parameter face id ID valid on frame F. */ | |
531 | ||
532 | static void | |
533 | ensure_face_ready (f, id) | |
534 | struct frame *f; | |
535 | int id; | |
536 | { | |
537 | if (FRAME_N_PARAM_FACES (f) <= id) | |
538 | { | |
539 | int n = id + 10; | |
540 | int i; | |
541 | if (!FRAME_N_PARAM_FACES (f)) | |
542 | FRAME_PARAM_FACES (f) | |
543 | = (struct face **) xmalloc (sizeof (struct face *) * n); | |
544 | else | |
545 | FRAME_PARAM_FACES (f) | |
546 | = (struct face **) xrealloc (FRAME_PARAM_FACES (f), | |
547 | sizeof (struct face *) * n); | |
548 | ||
549 | bzero (FRAME_PARAM_FACES (f) + FRAME_N_PARAM_FACES (f), | |
550 | (n - FRAME_N_PARAM_FACES (f)) * sizeof (struct face *)); | |
551 | FRAME_N_PARAM_FACES (f) = n; | |
552 | } | |
553 | ||
554 | if (FRAME_PARAM_FACES (f) [id] == 0) | |
555 | FRAME_PARAM_FACES (f) [id] = allocate_face (); | |
556 | } | |
557 | \f | |
558 | /* Return non-zero if FONT1 and FONT2 have the same width. | |
559 | We do not check the height, because we can now deal with | |
560 | different heights. | |
561 | We assume that they're both character-cell fonts. */ | |
562 | ||
563 | int | |
564 | same_size_fonts (font1, font2) | |
565 | XFontStruct *font1, *font2; | |
566 | { | |
567 | return (FONT_WIDTH(font1) == FONT_WIDTH(font2)); | |
568 | } | |
569 | ||
570 | /* Update the line_height of frame F according to the biggest font in | |
571 | any face. Return nonzero if if line_height changes. */ | |
572 | ||
573 | int | |
574 | frame_update_line_height (f) | |
575 | FRAME_PTR f; | |
576 | { | |
577 | int i; | |
30a231e6 GV |
578 | int fontset = FRAME_FONTSET (f); |
579 | int biggest = (fontset > 0 | |
580 | ? FRAME_FONTSET_DATA (f)->fontset_table[fontset]->height | |
581 | : FONT_HEIGHT (FRAME_FONT (f))); | |
ee78dc32 | 582 | |
30a231e6 GV |
583 | for (i = 0; i < FRAME_N_PARAM_FACES (f); i++) |
584 | if (FRAME_PARAM_FACES (f)[i] != 0 | |
585 | && FRAME_PARAM_FACES (f)[i]->font != (XFontStruct *) FACE_DEFAULT) | |
ee78dc32 | 586 | { |
30a231e6 GV |
587 | int height = ((fontset = |
588 | FRAME_PARAM_FACES (f)[i]->fontset) > 0 | |
589 | ? FRAME_FONTSET_DATA (f)->fontset_table[fontset]->height | |
590 | : FONT_HEIGHT | |
591 | (FRAME_PARAM_FACES (f)[i]->font)); | |
ee78dc32 GV |
592 | if (height > biggest) |
593 | biggest = height; | |
594 | } | |
595 | ||
30a231e6 | 596 | if (biggest == FRAME_LINE_HEIGHT (f)) |
ee78dc32 GV |
597 | return 0; |
598 | ||
30a231e6 | 599 | FRAME_LINE_HEIGHT (f) = biggest; |
ee78dc32 GV |
600 | return 1; |
601 | } | |
602 | \f | |
603 | /* Modify face TO by copying from FROM all properties which have | |
604 | nondefault settings. */ | |
605 | ||
606 | static void | |
607 | merge_faces (from, to) | |
608 | struct face *from, *to; | |
609 | { | |
610 | /* Only merge the font if it's the same width as the base font. | |
611 | Otherwise ignore it, since we can't handle it properly. */ | |
612 | if (from->font != (XFontStruct *) FACE_DEFAULT | |
613 | && same_size_fonts (from->font, to->font)) | |
614 | to->font = from->font; | |
30a231e6 GV |
615 | if (from->fontset != -1) |
616 | to->fontset = from->fontset; | |
ee78dc32 GV |
617 | if (from->foreground != FACE_DEFAULT) |
618 | to->foreground = from->foreground; | |
619 | if (from->background != FACE_DEFAULT) | |
620 | to->background = from->background; | |
621 | if (from->stipple != FACE_DEFAULT) | |
622 | { | |
623 | to->stipple = from->stipple; | |
624 | to->pixmap_h = from->pixmap_h; | |
625 | to->pixmap_w = from->pixmap_w; | |
626 | } | |
627 | if (from->underline) | |
628 | to->underline = from->underline; | |
629 | } | |
630 | ||
631 | /* Set up the basic set of facial parameters, based on the frame's | |
632 | data; all faces are deltas applied to this. */ | |
633 | ||
634 | static void | |
635 | compute_base_face (f, face) | |
636 | FRAME_PTR f; | |
637 | struct face *face; | |
638 | { | |
639 | face->gc = 0; | |
640 | face->foreground = FRAME_FOREGROUND_PIXEL (f); | |
641 | face->background = FRAME_BACKGROUND_PIXEL (f); | |
642 | face->font = FRAME_FONT (f); | |
30a231e6 | 643 | face->fontset = -1; |
ee78dc32 GV |
644 | face->stipple = 0; |
645 | face->underline = 0; | |
646 | } | |
647 | ||
648 | /* Return the face ID to use to display a special glyph which selects | |
649 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
650 | be CURRENT_FACE. F is the frame. */ | |
651 | ||
652 | int | |
653 | compute_glyph_face (f, face_code, current_face) | |
654 | struct frame *f; | |
655 | int face_code, current_face; | |
656 | { | |
657 | struct face face; | |
658 | ||
659 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
660 | ||
661 | if (face_code >= 0 && face_code < FRAME_N_PARAM_FACES (f) | |
662 | && FRAME_PARAM_FACES (f) [face_code] != 0) | |
663 | merge_faces (FRAME_PARAM_FACES (f) [face_code], &face); | |
664 | ||
665 | return intern_computed_face (f, &face); | |
666 | } | |
667 | ||
668 | /* Return the face ID to use to display a special glyph which selects | |
669 | FACE_CODE as the face ID, assuming that ordinarily the face would | |
670 | be CURRENT_FACE. F is the frame. */ | |
671 | ||
672 | int | |
673 | compute_glyph_face_1 (f, face_name, current_face) | |
674 | struct frame *f; | |
675 | Lisp_Object face_name; | |
676 | int current_face; | |
677 | { | |
678 | struct face face; | |
679 | ||
680 | face = *FRAME_COMPUTED_FACES (f)[current_face]; | |
681 | ||
682 | if (!NILP (face_name)) | |
683 | { | |
684 | int facecode = face_name_id_number (f, face_name); | |
685 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
686 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
687 | merge_faces (FRAME_PARAM_FACES (f) [facecode], &face); | |
688 | } | |
689 | ||
690 | return intern_computed_face (f, &face); | |
691 | } | |
692 | \f | |
693 | /* Return the face ID associated with a buffer position POS. | |
694 | Store into *ENDPTR the position at which a different face is needed. | |
695 | This does not take account of glyphs that specify their own face codes. | |
696 | F is the frame in use for display, and W is a window displaying | |
697 | the current buffer. | |
698 | ||
699 | REGION_BEG, REGION_END delimit the region, so it can be highlighted. | |
700 | ||
701 | LIMIT is a position not to scan beyond. That is to limit | |
702 | the time this function can take. | |
703 | ||
704 | If MOUSE is nonzero, use the character's mouse-face, not its face. */ | |
ee78dc32 GV |
705 | int |
706 | compute_char_face (f, w, pos, region_beg, region_end, endptr, limit, mouse) | |
707 | struct frame *f; | |
708 | struct window *w; | |
709 | int pos; | |
710 | int region_beg, region_end; | |
711 | int *endptr; | |
712 | int limit; | |
713 | int mouse; | |
714 | { | |
715 | struct face face; | |
716 | Lisp_Object prop, position; | |
717 | int i, j, noverlays; | |
718 | int facecode; | |
719 | Lisp_Object *overlay_vec; | |
720 | Lisp_Object frame; | |
721 | int endpos; | |
722 | Lisp_Object propname; | |
723 | ||
724 | /* W must display the current buffer. We could write this function | |
725 | to use the frame and buffer of W, but right now it doesn't. */ | |
726 | if (XBUFFER (w->buffer) != current_buffer) | |
727 | abort (); | |
728 | ||
729 | XSETFRAME (frame, f); | |
730 | ||
731 | endpos = ZV; | |
732 | if (pos < region_beg && region_beg < endpos) | |
733 | endpos = region_beg; | |
734 | ||
735 | XSETFASTINT (position, pos); | |
736 | ||
737 | if (mouse) | |
738 | propname = Qmouse_face; | |
739 | else | |
740 | propname = Qface; | |
741 | ||
742 | prop = Fget_text_property (position, propname, w->buffer); | |
743 | ||
744 | { | |
745 | Lisp_Object limit1, end; | |
746 | ||
747 | XSETFASTINT (limit1, (limit < endpos ? limit : endpos)); | |
748 | end = Fnext_single_property_change (position, propname, w->buffer, limit1); | |
749 | if (INTEGERP (end)) | |
750 | endpos = XINT (end); | |
751 | } | |
752 | ||
753 | { | |
754 | int next_overlay; | |
755 | int len; | |
756 | ||
757 | /* First try with room for 40 overlays. */ | |
758 | len = 40; | |
759 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
760 | ||
761 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, | |
762 | &next_overlay, (int *) 0); | |
763 | ||
764 | /* If there are more than 40, | |
765 | make enough space for all, and try again. */ | |
766 | if (noverlays > len) | |
767 | { | |
768 | len = noverlays; | |
769 | overlay_vec = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
770 | noverlays = overlays_at (pos, 0, &overlay_vec, &len, | |
771 | &next_overlay, (int *) 0); | |
772 | } | |
773 | ||
774 | if (next_overlay < endpos) | |
775 | endpos = next_overlay; | |
776 | } | |
777 | ||
778 | *endptr = endpos; | |
779 | ||
780 | /* Optimize the default case. */ | |
781 | if (noverlays == 0 && NILP (prop) | |
782 | && !(pos >= region_beg && pos < region_end)) | |
783 | return 0; | |
784 | ||
785 | compute_base_face (f, &face); | |
786 | ||
8be05193 | 787 | merge_face_list (f, &face, prop); |
ee78dc32 GV |
788 | |
789 | noverlays = sort_overlays (overlay_vec, noverlays, w); | |
790 | ||
791 | /* Now merge the overlay data in that order. */ | |
792 | for (i = 0; i < noverlays; i++) | |
793 | { | |
8be05193 GV |
794 | Lisp_Object oend; |
795 | int oendpos; | |
ee78dc32 | 796 | |
8be05193 GV |
797 | prop = Foverlay_get (overlay_vec[i], propname); |
798 | merge_face_list (f, &face, prop); | |
ee78dc32 | 799 | |
8be05193 GV |
800 | oend = OVERLAY_END (overlay_vec[i]); |
801 | oendpos = OVERLAY_POSITION (oend); | |
802 | if (oendpos < endpos) | |
803 | endpos = oendpos; | |
ee78dc32 GV |
804 | } |
805 | ||
806 | if (pos >= region_beg && pos < region_end) | |
807 | { | |
808 | if (region_end < endpos) | |
809 | endpos = region_end; | |
810 | if (region_face >= 0 && region_face < next_face_id) | |
811 | merge_faces (FRAME_PARAM_FACES (f)[region_face], &face); | |
812 | } | |
813 | ||
814 | *endptr = endpos; | |
815 | ||
816 | return intern_computed_face (f, &face); | |
817 | } | |
8be05193 GV |
818 | |
819 | static void | |
820 | merge_face_list (f, face, prop) | |
821 | FRAME_PTR f; | |
822 | struct face *face; | |
823 | Lisp_Object prop; | |
824 | { | |
825 | Lisp_Object length; | |
826 | int len; | |
827 | Lisp_Object *faces; | |
828 | int j; | |
829 | ||
830 | if (CONSP (prop) | |
831 | && ! STRINGP (XCONS (prop)->cdr)) | |
832 | { | |
833 | /* We have a list of faces, merge them in reverse order. */ | |
834 | ||
835 | length = Fsafe_length (prop); | |
836 | len = XFASTINT (length); | |
837 | ||
838 | /* Put them into an array. */ | |
839 | faces = (Lisp_Object *) alloca (len * sizeof (Lisp_Object)); | |
840 | for (j = 0; j < len; j++) | |
841 | { | |
842 | faces[j] = Fcar (prop); | |
843 | prop = Fcdr (prop); | |
844 | } | |
845 | /* So that we can merge them in the reverse order. */ | |
846 | } | |
847 | else | |
848 | { | |
849 | faces = (Lisp_Object *) alloca (sizeof (Lisp_Object)); | |
850 | faces[0] = prop; | |
851 | len = 1; | |
852 | } | |
853 | ||
854 | for (j = len - 1; j >= 0; j--) | |
855 | { | |
856 | if (CONSP (faces[j])) | |
857 | { | |
858 | if (EQ (XCONS (faces[j])->car, Qbackground_color)) | |
859 | face->background = load_color (f, XCONS (faces[j])->cdr); | |
860 | if (EQ (XCONS (faces[j])->car, Qforeground_color)) | |
861 | face->foreground = load_color (f, XCONS (faces[j])->cdr); | |
862 | } | |
863 | else | |
864 | { | |
865 | int facecode = face_name_id_number (f, faces[j]); | |
866 | if (facecode >= 0 && facecode < FRAME_N_PARAM_FACES (f) | |
867 | && FRAME_PARAM_FACES (f) [facecode] != 0) | |
868 | merge_faces (FRAME_PARAM_FACES (f) [facecode], face); | |
869 | } | |
870 | } | |
871 | } | |
872 | ||
ee78dc32 GV |
873 | \f |
874 | /* Recompute the GC's for the default and modeline faces. | |
875 | We call this after changing frame parameters on which those GC's | |
876 | depend. */ | |
877 | ||
878 | void | |
879 | recompute_basic_faces (f) | |
880 | FRAME_PTR f; | |
881 | { | |
882 | /* If the frame's faces haven't been initialized yet, don't worry about | |
883 | this stuff. */ | |
884 | if (FRAME_N_PARAM_FACES (f) < 2) | |
885 | return; | |
886 | ||
887 | BLOCK_INPUT; | |
888 | ||
889 | compute_base_face (f, FRAME_DEFAULT_FACE (f)); | |
890 | compute_base_face (f, FRAME_MODE_LINE_FACE (f)); | |
891 | ||
892 | merge_faces (FRAME_DEFAULT_PARAM_FACE (f), FRAME_DEFAULT_FACE (f)); | |
893 | merge_faces (FRAME_MODE_LINE_PARAM_FACE (f), FRAME_MODE_LINE_FACE (f)); | |
894 | ||
895 | intern_face (f, FRAME_DEFAULT_FACE (f)); | |
896 | intern_face (f, FRAME_MODE_LINE_FACE (f)); | |
897 | ||
898 | UNBLOCK_INPUT; | |
899 | } | |
900 | ||
901 | ||
902 | \f | |
903 | /* Lisp interface. */ | |
904 | ||
905 | DEFUN ("frame-face-alist", Fframe_face_alist, Sframe_face_alist, 1, 1, 0, | |
906 | "") | |
907 | (frame) | |
908 | Lisp_Object frame; | |
909 | { | |
910 | CHECK_FRAME (frame, 0); | |
911 | return XFRAME (frame)->face_alist; | |
912 | } | |
913 | ||
914 | DEFUN ("set-frame-face-alist", Fset_frame_face_alist, Sset_frame_face_alist, | |
915 | 2, 2, 0, "") | |
916 | (frame, value) | |
917 | Lisp_Object frame, value; | |
918 | { | |
919 | CHECK_FRAME (frame, 0); | |
920 | XFRAME (frame)->face_alist = value; | |
921 | return value; | |
922 | } | |
923 | ||
924 | ||
925 | DEFUN ("make-face-internal", Fmake_face_internal, Smake_face_internal, 1, 1, 0, | |
926 | "Create face number FACE-ID on all frames.") | |
927 | (face_id) | |
928 | Lisp_Object face_id; | |
929 | { | |
930 | Lisp_Object rest, frame; | |
931 | int id = XINT (face_id); | |
932 | ||
933 | CHECK_NUMBER (face_id, 0); | |
934 | if (id < 0 || id >= next_face_id) | |
935 | error ("Face id out of range"); | |
936 | ||
937 | FOR_EACH_FRAME (rest, frame) | |
938 | { | |
fbd6baed | 939 | if (FRAME_W32_P (XFRAME (frame))) |
ee78dc32 GV |
940 | ensure_face_ready (XFRAME (frame), id); |
941 | } | |
942 | return Qnil; | |
943 | } | |
944 | ||
945 | ||
946 | DEFUN ("set-face-attribute-internal", Fset_face_attribute_internal, | |
947 | Sset_face_attribute_internal, 4, 4, 0, "") | |
948 | (face_id, attr_name, attr_value, frame) | |
949 | Lisp_Object face_id, attr_name, attr_value, frame; | |
950 | { | |
951 | struct face *face; | |
952 | struct frame *f; | |
953 | int magic_p; | |
954 | int id; | |
955 | int garbaged = 0; | |
956 | ||
957 | CHECK_FRAME (frame, 0); | |
958 | CHECK_NUMBER (face_id, 0); | |
959 | CHECK_SYMBOL (attr_name, 0); | |
960 | ||
961 | f = XFRAME (frame); | |
962 | id = XINT (face_id); | |
963 | if (id < 0 || id >= next_face_id) | |
964 | error ("Face id out of range"); | |
965 | ||
30a231e6 | 966 | if (! FRAME_WINDOW_P (f)) |
ee78dc32 GV |
967 | return Qnil; |
968 | ||
969 | ensure_face_ready (f, id); | |
970 | face = FRAME_PARAM_FACES (f) [XFASTINT (face_id)]; | |
971 | ||
972 | if (EQ (attr_name, intern ("font"))) | |
973 | { | |
30a231e6 GV |
974 | XFontStruct *font = NULL; |
975 | int fontset; | |
976 | ||
977 | if (NILP (attr_value)) | |
978 | { | |
979 | font = (XFontStruct *) FACE_DEFAULT; | |
980 | fontset = -1; | |
981 | } | |
982 | else | |
983 | { | |
984 | CHECK_STRING (attr_value, 0); | |
985 | fontset = fs_query_fontset (f, XSTRING (attr_value)->data); | |
986 | if (fontset >= 0) | |
987 | { | |
988 | struct font_info *fontp; | |
989 | ||
990 | if (!(fontp = FS_LOAD_FONT (f, FRAME_W32_FONT_TABLE (f), | |
991 | CHARSET_ASCII, NULL, fontset))) | |
992 | Fsignal (Qerror, | |
993 | Fcons (build_string ("ASCII font can't be loaded"), | |
994 | Fcons (attr_value, Qnil))); | |
995 | font = (XFontStruct *) (fontp->font); | |
996 | } | |
997 | else | |
998 | font = load_font (f, attr_value); | |
999 | } | |
1000 | if (face->fontset == -1 && face->font != f->output_data.w32->font) | |
ee78dc32 GV |
1001 | unload_font (f, face->font); |
1002 | face->font = font; | |
30a231e6 | 1003 | face->fontset = fontset; |
ee78dc32 GV |
1004 | if (frame_update_line_height (f)) |
1005 | x_set_window_size (f, 0, f->width, f->height); | |
1006 | /* Must clear cache, since it might contain the font | |
1007 | we just got rid of. */ | |
1008 | garbaged = 1; | |
1009 | } | |
1010 | else if (EQ (attr_name, intern ("foreground"))) | |
1011 | { | |
1012 | unsigned long new_color = load_color (f, attr_value); | |
1013 | unload_color (f, face->foreground); | |
1014 | face->foreground = new_color; | |
1015 | garbaged = 1; | |
1016 | } | |
1017 | else if (EQ (attr_name, intern ("background"))) | |
1018 | { | |
1019 | unsigned long new_color = load_color (f, attr_value); | |
1020 | unload_color (f, face->background); | |
1021 | face->background = new_color; | |
1022 | garbaged = 1; | |
1023 | } | |
1024 | else if (EQ (attr_name, intern ("background-pixmap"))) | |
1025 | { | |
1026 | unsigned int w, h; | |
1027 | unsigned long new_pixmap = load_pixmap (f, attr_value, &w, &h); | |
1028 | x_destroy_bitmap (f, face->stipple); | |
1029 | face->stipple = (Pixmap) new_pixmap; | |
1030 | face->pixmap_w = w; | |
1031 | face->pixmap_h = h; | |
1032 | garbaged = 1; | |
1033 | } | |
1034 | else if (EQ (attr_name, intern ("underline"))) | |
1035 | { | |
1036 | int new = !NILP (attr_value); | |
1037 | face->underline = new; | |
1038 | } | |
1039 | else | |
1040 | error ("unknown face attribute"); | |
1041 | ||
1042 | if (id == 0 || id == 1) | |
1043 | recompute_basic_faces (f); | |
1044 | ||
1045 | /* We must redraw the frame whenever any face font or color changes, | |
1046 | because it's possible that a merged (display) face | |
1047 | contains the font or color we just replaced. | |
1048 | And we must inhibit any Expose events until the redraw is done, | |
1049 | since they would try to use the invalid display faces. */ | |
1050 | if (garbaged) | |
1051 | SET_FRAME_GARBAGED (f); | |
1052 | ||
1053 | return Qnil; | |
1054 | } | |
1055 | ||
1056 | DEFUN ("internal-next-face-id", Finternal_next_face_id, Sinternal_next_face_id, | |
1057 | 0, 0, 0, "") | |
1058 | () | |
1059 | { | |
1060 | return make_number (next_face_id++); | |
1061 | } | |
1062 | ||
1063 | /* Return the face id for name NAME on frame FRAME. | |
1064 | (It should be the same for all frames, | |
1065 | but it's as easy to use the "right" frame to look it up | |
1066 | as to use any other one.) */ | |
1067 | ||
1068 | int | |
1069 | face_name_id_number (f, name) | |
1070 | FRAME_PTR f; | |
1071 | Lisp_Object name; | |
1072 | { | |
1073 | Lisp_Object tem; | |
1074 | ||
1075 | tem = Fcdr (assq_no_quit (name, f->face_alist)); | |
1076 | if (NILP (tem)) | |
1077 | return 0; | |
1078 | CHECK_VECTOR (tem, 0); | |
1079 | tem = XVECTOR (tem)->contents[2]; | |
1080 | CHECK_NUMBER (tem, 0); | |
1081 | return XINT (tem); | |
1082 | } | |
1083 | \f | |
1084 | /* Emacs initialization. */ | |
1085 | ||
1086 | void | |
fbd6baed | 1087 | syms_of_w32faces () |
ee78dc32 GV |
1088 | { |
1089 | Qface = intern ("face"); | |
1090 | staticpro (&Qface); | |
1091 | Qmouse_face = intern ("mouse-face"); | |
1092 | staticpro (&Qmouse_face); | |
1093 | Qpixmap_spec_p = intern ("pixmap-spec-p"); | |
1094 | staticpro (&Qpixmap_spec_p); | |
1095 | ||
1096 | DEFVAR_INT ("region-face", ®ion_face, | |
1097 | "Face number to use to highlight the region\n\ | |
1098 | The region is highlighted with this face\n\ | |
1099 | when Transient Mark mode is enabled and the mark is active."); | |
1100 | ||
1101 | defsubr (&Spixmap_spec_p); | |
1102 | defsubr (&Sframe_face_alist); | |
1103 | defsubr (&Sset_frame_face_alist); | |
1104 | defsubr (&Smake_face_internal); | |
1105 | defsubr (&Sset_face_attribute_internal); | |
1106 | defsubr (&Sinternal_next_face_id); | |
1107 | } |